Heating-furnace.



J. L. MODONALD.

HEATING FURNACE.

APPLICATION FILED 0019,1907.

909,926 Patented Jan. 19, 190 9.

g 3 BHEBTS-SHEET 1.

vweufoz J. L. MCDONALD.

HEATING FURNACE.

AiPLIOATION IILBD 0OT.9,1907.

Q vihmooeo I W when J. L. MODONALD.

HEATING FURNACE.

APPLICATION FILED OUT. 9,1907.

. u w H n a m 9 a Z w H w m w H J W. Z m M P 4 Q 2 M n/v/ m %N c P w W M\ Q\\\\\. m m m l f w R w a knowledge of the details of construction JAMES L. MCDONALD, OF COLONA, PENNSYLVANIA.

HEATING-FURNACE.

Specification of Letters Patent.

Patented Jan. 19, 1909.

Application filed October 9, 1907. Serial No. 396,680.

To all whom it may concern.

Be it imown that I, JAMES L. MCDONALD, citizen of the {fnited States, residing at Colona, in the county of Beaver and State of Pennsylvania, have invented certain new and useful Improvements in Heating-Furnaces, of which the following is a specilicai tion.

This invention relates to furnaces for E heating blooms or ingots preliminary to subjecting the same either to a rolling mill or other machine, whereby the same are formed into'the required marketable product.

The invention has for its object to devise a novel form of furnace which is continuous in operation, that is, admits of the blooms or ingots being fed thereto continuously and i discharged therefrom sufficiently heated for subsequent working either in a mill or other type of machine according to the desired product. v

F or a full understanding of the invention and the merits thereof and also to acquire and the means for effecting the result, reference is to be had to the following description 1 and accompanying drawings.

\Vhile the invention may be adapted to different forms and conditions by changes in the structure and minor details without departing from the spirit or essential features thereof, still the preferred embodiment is shown in the accompanying drawings, in Which:

Figure 1 is a longitudinal section of a furnace embodying the invention, a portion being indicated in full lines. Fig. 2 is a horizontal section on the line 03-51: .x f Fig. 1. Fig. 3 is a transverse section or. :he line y-y of Fig. 1. Fig. 4 is a longitn- .ral section, showing the relative arrangment of the parts and the position of the blooms or ingots. Fig. 5 is a detail perspective viewof the ejector by means of which the heated blooms are discharged from the furnace and indicating operating means therefor.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The furnace comprises two heating cham-- bers, the floors of which are arranged at: different levels or planes. The floor 1 of the primary heating I'm-mire is in a higher plane than the lloor 2 of the heating furnace proper. ltach iloor 1. and J is provided with skid-ways upon which the blooms or ingots 3 are mounted to travel from the entrance end of the furnace to the discharge end. Any means may be employed for advancing the blooms 3 along the skid-way of the floors 1 and The tui nel t is located below the inner or discharge end of the floor 1 and in i advance of the floor 2 of the furnace proper.

'insuring the relative position of the blooms being changed so that the portion that was loweimost upon the floor 1 becomes uppermost on the floor 2. A sump or trough 8 is providedat the inner end of the floor 2 and skid-ways 9 are located at the upper end thereof parallel with the blooms 3 to rereive the same as they leave the floor 2. An ejector l0 is adapted to operate across the skid-ways J transversely of the inner or main furnace so as to etfecta discharge of the blooms or ingots when heated, so that they may be delivered either to the mill or other machine for working the same. The ejector 10 may be operated in any manner and as indicated in Fig. 5, is provided with a rack bar 11 with Which a pinion 12 cor operates, said pinion being fast to the shaft of a motor 13. The numeral 14 represents furnaces for heating the' chambers through which the blooms or ingots pass.

In the operation of the furnace, the blooms or ingots 3 are fed upon the floor 1 of the preliminary heating chamber and are pressed forward and when the floor 1 is filled and another bloom or ingot is placed at the receiving end and pressedforward, the bloom or ingot at the inner end drops from the skid-way and falls upon the tumbler (3 and is reversed and drops upon the floor 2 where the final heating is effected. The blooms are advanced upon the tloor 2 of the main heating chamber by the feeder 5 and after the floor 2 is filled and the blooms are advanced to make room for another as it drops from the floor 1, the bloom at the innor end of the floor 2 is received upon the skid-ways 9, after which it is discharged from the furnace by means of theejector 10,

so as to be delivered either to a mill or other machine by means of which it is{ Worked into the required shape. I

Having thus described the invention, I what is claimed as new is:

In a continuous heating furnace for blooms, ingots and the like, the combination of a pair of heating chambers having the floors thereof arranged at different elevetions, :1 skid-Way upon the floor of each of the chambers, the said skid-ways having the same general direction, a tumbler mounted at the discharge end of the upper skid-way and grovided With a depression for engaging t e blooms and turning the seine as they T" l i y sneeze disposed skid-way arranged within the sump for receiving the blooms from the lower skid way, and an ejector mounted to travel upon the transverse sl id-way for discharging the blooms laterally from the furnace.

In testimony whereof I my signature in presence of two Witnesses.

JAMES L, MCDONAL Witnesses N. V. F. Wnason, J. Tnsr. LEECH. 

